All the students wanted to know what the teacher meant ______saying that.A.as B.for C.to D.by 说理由
问题描述：
All the students wanted to know what the teacher meant ______saying that.A.as B.for C.to D.by 说理由
答
D，by 表示通过某种方式，这里by saying that就表示（通过）这么说
答
D
固定搭配
what‘s the meaning by “ ”
答
D by 通过 by doing sth 通过做某事
句意是：所以学生都想知道老师那样说是什么意思.